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    • 6. 发明申请
    • AUTOMATIC SHUTDOWN OR THROTTLING OF A BIST STATE MACHINE USING THERMAL FEEDBACK
    • 使用热反馈自动关机或弯曲状态机
    • US20070230260A1
    • 2007-10-04
    • US11278238
    • 2006-03-31
    • Kevin GormanEmory KellerMichael Ouellette
    • Kevin GormanEmory KellerMichael Ouellette
    • G11C29/00G11C7/00
    • G11C29/16G11C2029/5002
    • A Built-In-Self-Test (BIST) state machine providing BIST testing operations associated with a thermal sensor device(s) located in proximity to the circuit(s) to which BIST testing operations are applied. The thermal sensor device compares the current temperature value sensed to a predetermined temperature threshold and determines whether the predetermined threshold is exceeded. A BIST control element suspends the BIST testing operation in response to meeting or exceeding said predetermined temperature threshold, and initiates resumption of BIST testing operations when the current temperature value normalizes or is reduced. A BIST testing methodology implements steps for mitigating the exceeded temperature threshold condition in response to determining that the predetermined temperature threshold is met or exceeded. These steps include one of: ignoring the BIST results of the suspect circuit(s), or by causing the BIST state machine to enter a wait state and adjusting operating parameters of the suspect circuits while in the wait state.
    • 内置自测试(BIST)状态机,提供与位于BIST测试操作所在电路附近的热传感器设备相关的BIST测试操作。 热传感器装置将感测到的当前温度值与预定温度阈值进行比较,并确定是否超过预定阈值。 BIST控制元件响应于满足或超过所述预定温度阈值而暂停BIST测试操作,并且当当前温度值归一化或降低时,启动BIST测试操作的恢复。 响应于确定满足或超过预定温度阈值,BIST测试方法实现了减轻超过温度阈值条件的步骤。 这些步骤包括:忽略可疑电路的BIST结果,或通过使BIST状态机进入等待状态,并在等待状态下调整可疑电路的工作参数。
    • 8. 发明申请
    • METHOD FOR REDUCED ELECTRICAL FUSING TIME
    • 降低电气熔融时间的方法
    • US20050013187A1
    • 2005-01-20
    • US10604414
    • 2003-07-18
    • Darren AnandJohn BarthSteven OaklandMichael Ouellette
    • Darren AnandJohn BarthSteven OaklandMichael Ouellette
    • G11C17/00G11C17/16G11C17/18
    • G11C17/16G11C17/18
    • A method and electrical fuse circuit design for reducing the testing time for a semiconductor device manufactured with redundant eFuse circuitry. A two-to-one multiplexer (MUX) is provided at each eFuse circuit in addition to the fuse latch and pattern latch and other logic components the eFuse circuit. Information on which fuse is to be blown is stored in the fuse's pattern latch. The output generated by the pattern latch is ANDed with a program input to provide a select signal for the MUX. Based on the select signal, the MUX allows the shifted “1” to either go to the next latch in the shift chain or bypass the next latch or latches in the shift chain depending on whether the next fuse is to be blown. Accordingly, rather than serially shifting through each fuse latch within the device, the invention enables only those fuse latches associated with fuses that are to be blown to hold up the propagation of the shifted “1” to the next eFuse circuits.
    • 一种用于减少使用冗余eFuse电路制造的半导体器件的测试时间的方法和电熔丝电路设计。 除了保险丝锁存器和图案锁存器以及eFuse电路的其他逻辑元件之外,在每个eFuse电路上还提供两对一多路复用器(MUX)。 保险丝图案锁存器中存储有要熔断保险丝的信息。 由模式锁存器产生的输出与程序输入进行“与”运算以提供MUX的选择信号。 基于选择信号,MUX允许移位的“1”转到下一个锁存器,或者旁路下一个锁存器或锁存在换档链中,这取决于下一个保险丝是否被熔断。 因此,本发明不仅可以串联地转换器件内的每个熔丝锁存器,而且仅使与熔断器相关联的熔丝锁存器能够保持传输“1”到下一个eFuse电路的传输。
    • 10. 发明申请
    • METHOD AND APPARATUS FOR INCREASING FUSE PROGRAMMING YIELD THROUGH PREFERRED USE OF DUPLICATE DATA
    • 通过优化使用重复数据来增加保险丝编程的方法和装置
    • US20060239088A1
    • 2006-10-26
    • US10908033
    • 2005-04-26
    • Darren AnandMichael OuelletteMichael Ziegerhofer
    • Darren AnandMichael OuelletteMichael Ziegerhofer
    • G11C29/00G11C7/00
    • G11C17/165G11C29/027G11C29/4401G11C29/72
    • Integrated circuit memory is tested to discover defective memory elements. To replace the defective memory elements, spare memory elements are selected and a string is generated to indicate which ones of the spares replace which ones of the defective memory elements. The number of bits of the string depend upon how many of the memory elements are defective. Although a certain number of the memory elements are defective, which determines the number of the string bits, nevertheless, a number of fuses to program on the integrated circuit is determined responsive to how many fuses are available for programming relative to the number of the binary string bits. That is, if more fuses are available than a certain threshold number relative to the number of string bits (as is preferred), then more than the threshold number are programmed. If not, then only that certain threshold number of fuses are programmed.
    • 测试集成电路存储器以发现有缺陷的存储器元件。 为了更换有缺陷的存储器元件,选择备用存储器元件,并且生成字符串以指示哪些备用件替换有缺陷存储器元件中的哪一个。 字符串的位数取决于多少存储器元件有缺陷。 尽管一定数量的存储器元件是有缺陷的,这确定了串比特的数目,然而,确定集成电路上编程的多个保险丝的响应是相对于二进制数的编号有多少个熔丝可用于编程 字符串位。 也就是说,如果比相对于字符串位数(优选的)更多的熔丝可用于某个阈值数,则多于阈值编号。 如果没有,那么只有该阈值数量的保险丝被编程。